2oldman wrote:
My owner's manual says I don't need to do anything. I don't consider this a conspiracy to make my roof degrade faster.
This is exactly correct. The EPDM roofing material "sheds" as it is exposed to UV light. That material "shed" from the roof actually shields the remaining material from the UV light and prolongs the life of the roof. EPDM roofing material is widely used in commercial applications, primarily on flat roofs such as warehouses and factories, and those roofs are never washed and coated with a "protectant".
